def test_union(self):
b1 = Box(dict(size=(10, 50), topleft=(100, 200)))
b2 = Box(dict(size=(10, 50), topleft=(101, 201)))
self.assertEqual(b1.union(b2), Box(dict(size=(11, 51), topleft=(100, 200))))
b1 = Box(dict(size=(1, 1), topleft=(100, 200)))
b2 = Box(dict(size=(1, 1), topleft=(200, 300)))
self.assertEqual(b1.union(b2), Box(dict(size=(101, 101), topleft=(100, 200))))
def test_translate(self):
b = Box(dict(size=(10, 50), left=(100, 200)))
b2 = b.translate(dx=1000, dy=2000)
self.assertEqual(b2, Box(dict(size=(10, 50), left=(1100, 2200))))
